package com.kuang.dao;

import com.kuang.pojo.Department;
import org.springframework.stereotype.Repository;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

/**
 * Author: Zhang Dongwei
 * Date: 2022/7/25 18:14
 */
//部门dao
@Repository
public class DepartmentDao {
//    模拟数据口中的数据

    private static Map<Integer, Department> departments = null;
    static {
        departments = new HashMap<Integer, Department>();  // 创建一个部门表

        departments.put(101, new Department(101, "教学部"));
        departments.put(102, new Department(102, "市场部"));
        departments.put(103, new Department(103, "教研部"));
        departments.put(104, new Department(104, "运营部"));
        departments.put(105, new Department(105, "后勤部"));
    }

//    获得所有部门信息
    public Collection<Department> getDepartments(){
        return departments.values();
    }

//    通过id得到部门
    public Department getDepartmentById(Integer id){
        return departments.get(id);
    }
}
